The 27-inch-by-22-inch quilt was one of dozens hanging on display on the fifth-floor lobby of Sutter Medical Center.

It was hung on Sept. 8 and discovered missing three days later, organizers said.

"How sad that somebody has given this quilt for charity and it's taken. It's gone. And it just breaks your heart because the artist spent her time and her money to make that quilt," said Jeanne Powell, chairwoman of the Sutter Breast Cancer Quilt Auction.

Auction organizers estimated that the quilt, which depicts the Tower Bridge and downtown Sacramento, would likely have fetched up to $500 at auction.

The hospital said it has increased security patrols since the theft was discovered but has not yet reported the crime to police.